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Orange Filling

A citrus filling made from lemon and orange rinds, juice, flour, water, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Lemon and orange match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Orange Filling

Ingredients

Directions

Prepare

  1. Grate the rinds of the lemon and oranges.

  2. Strain the juice.

  3. Moisten the flour with a little water.

  4. Bring the remaining water to a boil.

Make the filling

  1. Stir in the moistened flour, grated rind, and juice.

  2. Boil for three minutes.

  3. Let it cool.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Lemon + orangetop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Lemon + flourtop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Orange + sugartop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

    Shared aroma: beta-damascenone (apple, rose).

Lemon and sugar barely smell alike, yet cooks put them together in 53,532 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Flour
Thickens the filling as it heats, giving it a set, spreadable body.
Sugar
Sweetens the filling and balances the sharp citrus acidity.
Oranges
Provide juice and aromatic rind for the filling's main flavor.
Lemon
Adds extra citrus acidity and aromatic oils from its rind.

The step that matters

Stir in the moistened flour before boiling. Flour clumps if added dry to hot liquid. Mixing it with a little water first lets the starch disperse evenly, so the filling thickens smoothly when it boils.

Swap the orange

How well each one fits the dish's main ingredients (lemon, flour, sugar):

  1. Raisinfits better
  2. Vanillafits about as well
  3. Orangethe original
  4. Limefits about as well

Fit is the average pairing score against lemon, flour, sugar. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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